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arXiv math/0502559math.STstat.TH
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接近于正态分布的一般稳定分布的Fisher信息矩阵

Fisher Information Matrix of General Stable Distributions Close to the Normal Distribution

Muneya Matsui

摘要:

研究了一般稳定分布的Fisher信息矩阵的性质。DuMouchel(1975,1983)证明了特征指数α的Fisher信息在α接近2时趋于无穷大。Nagaev和Shkol'nik(1988)做了更详细的分析,并导出了对称情形下当α接近2时,α发散到无穷大的Fisher信息矩阵的渐近行为。本文推广了他们的工作,通过详细研究一般稳定分布的密度及其得分函数的性质,得到了当α趋于2时,其Fisher信息矩阵的性质。阐明了4 × 4 Fisher信息矩阵关于位置μ、尺度σ、特征指数α和偏度参数β的极限值。

英文摘要:

We investigate behavior of the Fisher information matrix of general stable distributions. DuMouchel (1975, 1983) proved that the Fisher information of characteristic exponent αdiverges to infinity as αapproaches 2. Nagaev and Shkol'nik (1988) made more detailed analysis and derived asymptotic behavior of the Fisher information matrix of αdiverging to infinity as αapproaches 2 in the symmetric case. Extending their work in this paper we have obtained behavior of the Fisher information matrix of general stable distributions as αapproaches 2 by detailed study of behavior of the corresponding density and its score functions. We clarify the limiting values of the 4*4 Fisher Information matrix with respect to the location μ, the scale σ, the characteristic exponent αand the skewness parameter β.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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